<?php


namespace App\Http\Searchs\Product;


use LTools\Searchs\SearchAbstract;

class BookSearch extends SearchAbstract
{

    /**
     * 关系映射.
     *
     * @return array
     */
    protected function relationship(): array
    {
        return [
            'unique' => '=',
            'record_no' => '=',
        ];
    }
}